My RV seems to have a leak in the shower supply line. My problem is the shower wall backs up to a closet with two drawers below. There is no access door to get to the supply lines and I don’t know where the leak may be. What do you suggest I do to fix this problem? —Gary, 2019 Fleetwood Bounder 35K
From what I could find on the General RVs For Sale site, it looks like your 35 Bounder has the rear bathroom; is that correct?
The shower surround looks to be one piece with no “panel” at the wall with the faucet, so access has to be from the bedroom side, right? Typically, the shower supply lines would run from the basement area and come up inside the hollow wall between the wardrobe and the shower. These are PEX lines with compression fittings, so if you can get access to them, they can be fixed with a coupler.
Check the RV supply line leak first
Where do you see the water leak and why do you think it is the supply lines? Leaks are what I call “gremlins” in the RV industry. That’s because where the water finally shows up is not always where it starts to leak or enter the rig. One trick we have done in the past is to put pink RV antifreeze in the freshwater tank and run the suspected plumbing line to make sure the leak is pink. If not, it’s most likely moisture coming in from an outside source.
Getting access to the water supply line
I am surprised there is no access panel in the wardrobe as the faucet typically has a small square panel behind it. I would start by taking off the faucet from the shower side if possible and inspecting the lines and connection there. This should show you the direction of the hot and cold coming to the faucet or valve. Then, you might have to cut an access panel in the wardrobe to get to them.
It seems ridiculous that there is no access. However, I have found that the engineers and designers that build these don’t work on them, so we see issues like this. You can cut a small square in the wardrobe wall and decide if you need to go bigger to get to the issue. Then cover the opening with a larger piece of paneling that matches.
How to disguise what you cut out
In one situation similar to this, we cut a square in a shirt closet and covered the opening with a full piece of cedar that looked factory installed. Another option would be to cut a good square in the wall, then place two or three 1×1 sticks inside the walls. Fasten them on both sides and place the panel square you cut out into the hole and screw it into the 1×1 backers. Then cover the cuts with molding to make it look like a frame.
Whatever you decide, I would suggest investigating all plumbing lines carefully before tearing into the wardrobe. Maybe some of our readers have had a similar situation that they could comment on. Readers, have you had a leak in your shower supply line before?
Dave Solberg is a leading expert in the RV industry and author of the “RV Handbook” as well as the Managing Editor of the RV Repair Club.
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